Stable high efficiency two-dimensional perovskite solar cells via cesium doping

Handle URI:
http://hdl.handle.net/10754/626632
Title:
Stable high efficiency two-dimensional perovskite solar cells via cesium doping
Authors:
Zhang, Xu; Ren, Xiaodong; Liu, Bin; Munir, Rahim ( 0000-0002-6029-3760 ) ; Zhu, Xuejie; Yang, Dong; Li, Jianbo; Liu, Yucheng; Smilgies, Detlef-M. ( 0000-0001-9351-581X ) ; Li, Ruipeng; Yang, Zhou; Niu, Tianqi; Wang, Xiuli; Amassian, Aram ( 0000-0002-5734-1194 ) ; Zhao, Kui ( 0000-0002-9512-0405 ) ; Liu, Shengzhong (Frank) ( 0000-0002-6338-852X )
Abstract:
Two-dimensional (2D) organic-inorganic perovskites have recently emerged as one of the most important thin-film solar cell materials owing to their excellent environmental stability. The remaining major pitfall is their relatively poor photovoltaic performance in contrast to 3D perovskites. In this work we demonstrate cesium cation (Cs) doped 2D (BA)(MA)PbI perovskite solar cells giving a power conversion efficiency (PCE) as high as 13.7%, the highest among the reported 2D devices, with excellent humidity resistance. The enhanced efficiency from 12.3% (without Cs) to 13.7% (with 5% Cs) is attributed to perfectly controlled crystal orientation, an increased grain size of the 2D planes, superior surface quality, reduced trap-state density, enhanced charge-carrier mobility and charge-transfer kinetics. Surprisingly, it is found that the Cs doping yields superior stability for the 2D perovskite solar cells when subjected to a high humidity environment without encapsulation. The device doped using 5% Cs degrades only ca. 10% after 1400 hours of exposure in 30% relative humidity (RH), and exhibits significantly improved stability under heating and high moisture environments. Our results provide an important step toward air-stable and fully printable low dimensional perovskites as a next-generation renewable energy source.
KAUST Department:
KAUST Solar Center (KSC); Physical Sciences and Engineering (PSE) Division
Citation:
Zhang X, Ren X, Liu B, Munir R, Zhu X, et al. (2017) Stable high efficiency two-dimensional perovskite solar cells via cesium doping. Energy & Environmental Science 10: 2095–2102. Available: http://dx.doi.org/10.1039/c7ee01145h.
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Energy Environ. Sci.
Issue Date:
15-Aug-2017
DOI:
10.1039/c7ee01145h
Type:
Article
ISSN:
1754-5692; 1754-5706
Sponsors:
This work was supported by the National Key Research project MOST (2016YFA0202400), the National Natural Science Foundation of China (61604092 and 61674098), the National University Research Fund (Grant No. GK261001009, GK201603107), the 111 Project (B14041), and the Chinese National 1000-talent-plan program (1110010341). CHESS is supported by the NSF award DMR-1332208.
Additional Links:
http://pubs.rsc.org/en/Content/ArticleLanding/2017/EE/C7EE01145H#!divAbstract
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Solar and Photovoltaic Engineering Research Center (SPERC)

Full metadata record

DC FieldValue Language
dc.contributor.authorZhang, Xuen
dc.contributor.authorRen, Xiaodongen
dc.contributor.authorLiu, Binen
dc.contributor.authorMunir, Rahimen
dc.contributor.authorZhu, Xuejieen
dc.contributor.authorYang, Dongen
dc.contributor.authorLi, Jianboen
dc.contributor.authorLiu, Yuchengen
dc.contributor.authorSmilgies, Detlef-M.en
dc.contributor.authorLi, Ruipengen
dc.contributor.authorYang, Zhouen
dc.contributor.authorNiu, Tianqien
dc.contributor.authorWang, Xiulien
dc.contributor.authorAmassian, Aramen
dc.contributor.authorZhao, Kuien
dc.contributor.authorLiu, Shengzhong (Frank)en
dc.date.accessioned2018-01-01T12:19:04Z-
dc.date.available2018-01-01T12:19:04Z-
dc.date.issued2017-08-15en
dc.identifier.citationZhang X, Ren X, Liu B, Munir R, Zhu X, et al. (2017) Stable high efficiency two-dimensional perovskite solar cells via cesium doping. Energy & Environmental Science 10: 2095–2102. Available: http://dx.doi.org/10.1039/c7ee01145h.en
dc.identifier.issn1754-5692en
dc.identifier.issn1754-5706en
dc.identifier.doi10.1039/c7ee01145hen
dc.identifier.urihttp://hdl.handle.net/10754/626632-
dc.description.abstractTwo-dimensional (2D) organic-inorganic perovskites have recently emerged as one of the most important thin-film solar cell materials owing to their excellent environmental stability. The remaining major pitfall is their relatively poor photovoltaic performance in contrast to 3D perovskites. In this work we demonstrate cesium cation (Cs) doped 2D (BA)(MA)PbI perovskite solar cells giving a power conversion efficiency (PCE) as high as 13.7%, the highest among the reported 2D devices, with excellent humidity resistance. The enhanced efficiency from 12.3% (without Cs) to 13.7% (with 5% Cs) is attributed to perfectly controlled crystal orientation, an increased grain size of the 2D planes, superior surface quality, reduced trap-state density, enhanced charge-carrier mobility and charge-transfer kinetics. Surprisingly, it is found that the Cs doping yields superior stability for the 2D perovskite solar cells when subjected to a high humidity environment without encapsulation. The device doped using 5% Cs degrades only ca. 10% after 1400 hours of exposure in 30% relative humidity (RH), and exhibits significantly improved stability under heating and high moisture environments. Our results provide an important step toward air-stable and fully printable low dimensional perovskites as a next-generation renewable energy source.en
dc.description.sponsorshipThis work was supported by the National Key Research project MOST (2016YFA0202400), the National Natural Science Foundation of China (61604092 and 61674098), the National University Research Fund (Grant No. GK261001009, GK201603107), the 111 Project (B14041), and the Chinese National 1000-talent-plan program (1110010341). CHESS is supported by the NSF award DMR-1332208.en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.relation.urlhttp://pubs.rsc.org/en/Content/ArticleLanding/2017/EE/C7EE01145H#!divAbstracten
dc.titleStable high efficiency two-dimensional perovskite solar cells via cesium dopingen
dc.typeArticleen
dc.contributor.departmentKAUST Solar Center (KSC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalEnergy Environ. Sci.en
dc.contributor.institutionUniversity of Chinese Academy of Sciences, Beijing, 100049, Chinaen
dc.contributor.institutionKey Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, , Chinaen
dc.contributor.institutionDalian National Laboratory for Clean Energy, IChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, , Chinaen
dc.contributor.institutionCornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, NY, 14853, United Statesen
kaust.authorMunir, Rahimen
kaust.authorAmassian, Aramen
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